IPCC. Climate Change 1995: The science of climate change (Report of Working Group I ). New York: Cambridge University Press, 1996,4.
[2]
Kimble J, Cook T, Eswaran H. Organic matter in soils of the tropics. In: Proc. Symp. Characterization and role of organic matter in different soils. Int. Congr. Soil Sci. 14th, Kyoyo, Japan. 12-18 Aug. 1990. ISSS, Wageningen, The Netherlands, 1990.
[3]
Eswaran H, VanDenBerg E, Reich P.Organic carbon in soils of the world[J]. Soil Sci. Soc. Am. J., 1993,(57): 192-194.
[4]
Post W M, Peng T H, Emmanuel W R., et al. The global carbon cycle[J]. Am. Sci. 1990,(78): 310-326.
[5]
Duxbury J M. The significance of agricultural sources of greenhouse gases[J]. Fertilizer Research, 1994,(38): 151-163.
[6]
Somebroek W G, Nachtergaele F O, Hebel A. Amounts, dynamics and sequestration of carbon in Tropic and Subtropical soils[J]. AMBIO, 1993,(22) : 417-426.
[7]
Burke I C, Laurenroth W K, Coffin D P. Recovery of soil organic matter and N mineralization in semiarid grasslands: Implications for the conservation reserve program[J]. Ecological Applications, 1995, (5): 793-801.
[8]
Cole C V, Flach K, Lee J, et al. Agricultural sources and sinks of carbon[J]. Water Air Soil Pollution, 1993,(70):111-122.
[9]
Lal R. Global soil erosion by water and C dynamics. In: Lal R, Kimle J M, Levine E, et al. Soils and Global Changes. Boca Raton: CRC/Lewis Publishers, 1995. 131-142.
[10]
Cole C V K. Agricultural options for mitigation of greenhouse gas emissions. In : Watson R T, Zinyowera M C, Moss R H. Climate Change 1995- Impacts, Adaptations and Mitigation of Climate Change: Intergovernmental Panel On Climate Change. Cambridge:Cambridge University Press, 1996. 1-27.
[11]
Lal R. Residue management, conservation tillage and soil restoration for mitigating greenhouse effect by CO2 enrichment[J]. Soil Till. Res., 1997,(43): 81-107.
[12]
Bruce J P, Frome M, Haites E, et al. Carbon sequestration in soils[J]. Soil Water Conservation, 1999, (54) : 382-389.
[13]
IPCC. Climate Change 1995-Impacts, Adaptations and Mitigation of Climate Change: Scientific-Technical Analyses[M]. Cambridge:Cambridge University Press, 1996b.
[14]
Batjes N H. Mitigation of atmospheric CO2 concentrations by increased carbon sequestration in the soil[J]. Biological Fertility Soils, 1998,(27): 230-235.
[15]
Paustian K, Andren O, Janzen H, et al. Agricultural soil as a C sink to offset CO2 emission[J]. Soil Use and Management, 1997, (13): 230-244.
[16]
Lal R, Bruce J P. The potential of world cropland soils to sequester C and mitigate the greenhouse effect[J]. Environmental Science and Policy, 1999, (2): 177- 186.
[17]
Allmaras R R, Dowdy R H. Conservation tillage systems and their adoption in the United States[J]. Soil Till. Res.,1995, (5): 197-222.
[18]
Halvorson A D, Reule C A, Follett R F. Nitrogen fertilization effects on soil carbon and nitrogen in a dryland cropping system[J]. Soil Sci. Soc. Am. J., 1999,(63): 912-917.
[19]
Mrabet R, Saber N, El-Brahli A, et al. Total particulate organic matter and structural stability of a Calcixeroll soil under different wheat rotations and tillage systems in a semiarid area of Morocco[J]. Soil & Till. Res., 2001, (57): 225-235.
[20]
Yang X M, Wander M M. Tillage effects on soil organic carbon distribution and estimation of C storage[J]. Soil and Till. Res., 1999, (52): 1-9.
[21]
Janzen H H, Campbell C A, Izaurralde R C, et al. Light fraction organic matter in soil from long-term rotations[J]. Soil Sci. Soc. Am. J., 1992, (56): 1799-1806.
[22]
Donigan A S, Patwardhan A S, Chinnaswamy R V, et al. Modeling soil carbon and agricultural practices in the central US: An update of preliminary study results. In: Lal R, et al. Soil Processes and Carbon Cycle. Boca Raton: CRC Press, 1997. 499-518.
Guo L P, Lin E D. Carbon sink in cropland soils and emissions of greenhouse gases from paddy soils: A review of work in China[J]. Chemosphere Global Change Science,2001, (3): 413-418.
United Nations.United Nations framework convention on climate change.United Nations, New York, 1992.
[32]
United Nations. Report of the conference of the parties on its third session. Kyoto Protocol, FCCC/CP/Add.a, United Nations, New York, 1997.
[33]
Bohn H L. Estimate of organic carbon in world soils[J]. Soil Sci. Soc. Am. J.,1976,(40): 468-470.
[34]
Buringh P. Organic carbon in soils of the world[J]. SCOPE, 1984,(23): 91-109.
[35]
Batjes N H, Sombroek W G. Possibilities for carbon sequestration in tropical and subtropical soils[J]. Global Change Biol., 1997,(3): 161-173.
[36]
Pepper W J, Leggett J, Swart R, et al. Emissions scenarios for the IPCC. An update: Assumptions, methodology, and results. Support document for chapter A3. In: Houghton J T, Callander B A and Varney S K. Climate Change: Supplementary report to the IPCC scientific assessment. Cambridge :Cambridge University Press, 1992, 200.
[37]
Houghton R A, Skole D L. Carbon. In: Turner B S, Clark W C, Kates R W, et al. The earth as transformed by human action. Cambridge :Cambridge Univ. Press, 1990. 393-408.
[38]
Schlesinger W H. Carbon sequestration in soils[J]. Science, 1999, (284): 2095.
[39]
Cole C V, Cerri C, Minami K, et al. Agricultural options for mitigation of greenhouse gas emissions. In: Watson R T, Zinyowera M C, Moss R H. Climate Change 1995 Impacts, Adaptations and Mitigation of Climate Change: Scientific:Technical Analyses. Cambridge: Cambridge University Press, 1996. 745-771.
[40]
Houghton R A. The annual net flux of carbon to the atmosphere from changes in land use 1850-1990[J]. Tellus, 1999, (51B): 298-313.
[41]
Smith P, Powlson D S, Gledining M J, et al. Potential for carbon sequestration in European soils: preliminary estimates for five scenarios using results from long-term experiments[J]. Global Change Biol., 1997, (3): 67-79.
[42]
Angers D A, Bolinder M A, Carter M R, et al. Impact of tillage practices on organic carbon and nitrogen storage in cool, humid soils of eastern Canada[J]. Soil and Tillage Research, 1997,(41): 191-201.
[43]
Yang X M, Kay B D. Impacts of tillage practices on total, loose- and occluded-particulate, and humified organic carbon fractions in soils within a field in southern Ontario[J]. Can. J. Soil Sci., 2001,(81): 149-156.
[44]
IPCC. Climate Change 2001: Mitigation. In: Metz B, Davidson O, Swart R, et al. The science of climate change( Report of Working Group III of The International Group of Climate Change). Cambridge :Cambridge University Press, 2002.
[45]
Yang X M, Kay B D. Rotation and tillage effects on soil organic carbon sequestration in a typic Hapludalf in southern Ontario[J]. Soil & Till. Res., 2001, (59): 107-114.
[46]
Tian G, Kolawole G O, Salako F K, et al., An improved cover crop-fallow system for sustainable management of low activity clay soils of the tropics[J]. Soil Science, 1999, (164): 671-682.
[47]
USEPA. Inventory of US greenhouse gas emissions and sinks:1990–1999,2001. http://www.epa.gov/globalwarming/publications/emissions/us2001/index.html
[48]
Robins B. Carbon credit traders don't think it's a Don Kyoto treaty. 2001, http://www.smh.com.au/news/0107/25/biztech/biztech15.html
[49]
Ag Climate. Canadian energy companies to pay US farmers for carbon credits. Wall Street Journal, 1999-10-21.
Ellert B H, Bettany J R. Calculation of organic matter and nutrients stored in soils under contrasting management regimes[J]. Can. J. Soil Sci., 1995,(75): 529-538.
[52]
Post W M, Izaurralde R C, Mann L K, et al. Monitoring and verifying changes of organic carbon in soil[J]. Climatic Change, 2001, (51): 73-99.
[53]
Parton W J, Ojima D S, Schimel D S. Models to evaluate soil organic matter storage and dynamics. In: Cater M R, Stewart B A. Structure and Organic Matter Storage in Agricultural Soils. Adv. Soil Sci. New York: CRC Press, Lewis Publishers, 1995. 421-448.
[54]
Jefferson M. Potential Climate Change: Carbon Dioxide Emissions 1990-1996[J].World Energy Council Journal, 1997, 76-82.
[55]
World Bank. Issues and options in greenhouse gas emissions control[M]. Washington D C, 1994.
[56]
Streets D G, Jiang K J, Hu X L, et al. Recent reductions in China's greenhouse gas emissions[J]. Science, 2001, (294): 1835-1837.
[57]
Li Z, Zhao Q G. Carbon dioxide fluxes and potential mitigation in agriculture and forestry of tropical and subtropical China[J]. Climatic Change, 1998, (40): 119-133.
